I got TrackBack when I wasn't looking

I noticed in my event log (which I don't check as often as I should) that I received a "root update" from Radio Userland. Evidently one of the things I got in the update is TrackBack (with both the ability to send and receive TrackBack pings), because I now have a "TrackBack" option on my Radio Userland Preferences page. I've turned TrackBack on and added it to my blog template - now let's see how well it works over the next couple of weeks.